Cultivator.



No. 852,669.v PATBNTBD MAY '7, 1907. G. s. MAYN.

GULTIVATOR.

' APPLIOATION FILED AUG. 6, 1906.

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GEORGE S. MAYN, O

PATIENT @FIFTQEQ F TIPTON, INDIANA.

CULTIVATOR.

No. 852,669. Specification of Application led August 6,

To @ZZ whom t may concern.'

Be it known that I, GEORGE S. MAYN, a citizen of the United States,residing at Tipton, in the county of Tipton and State of Indiana, haveinvented certain new and useful Improvements in Cultivators, of whichthe following is a specification.

My present invention relates to that class of plows or cultivatorswherein the plowpoint is adapted to yield and turn back upon striking anobstruction, thereby obviating the danger of breaking any of theoperative parts.

Said invention consists in an improved means for holding the plow partsinto operative position while the implement is performing its ordinarywork, and still permitting this yielding, or turning backward, when theplow-point strikes an obstruction.

Referring to the accompanying drawing, which is made a part hereof, andon which' similar reference characters refer to similar parts, Figure lis a side elevation of a plow or cultivator embodying my presentinvention, with the plow-point in its operative position, Fig. 2, asimilar view with the plowpoint turned back in the position it occupiesimmediately after coming in contact with an obstruction during theoperation of plowing or cultivation; Fig. 3, an elevation, on anenlarged scale, as seen when looking in the direction indicated by thearrows from the dot- Ited line 3 3 adjacent to Fig. l, and Fig. 4, a

detail horizontal sectional view at the point indicated by the dottedline 4 4 in Figs. 1and3.

This plow or cultivator, generally speaking, may be of any usual orapproved form or construction. The form which I have illustrated is avery simple one, and is provided with but a single plow-point. It willbe understood, of course, that most such implements have a plurality ofplow-points, and the constructions of such implements are quitenumerous.

Attached to the plow-beam 21 (in the construction shown) is a verticalbar 22. The plow-point 23 is mounted on a shank 24, and said shank hastwo spring arms 25 and 26 extending upwardly therefrom alongside the bar22. These spring arms and the bar are pivotally united, as by a bolt 27.At the upper ends these spring arms extend rearwardly and terminate inlatch-members 28 and 29 which partially embrace the bar 22, whichprovides a latching engagement between the spring arms and the bar. Apre- Letters Patent. Jatenteo. May '7, 1907.

1906. Serial No. 329,346.

ferred form for this is shown in Fig. 4. One or both of said spring armsalso preferably carries a stop 30, which prevents them from swinging inthe opposite direction to the plowing pressure (and thus throwing theplow-points out of proper position for work) as might happen in handlingthe implement, as in pulling it back into position for use.

The operation is as follows: The parts being brought into operativeposition, as shown in Fig. l, the plowing or cultivating operationproceeds until the plow point strikes an obstruction, when the forcewill press the spring arms apart somewhat, and permit the plow-point andthe parts by which it is carried to swing into the position shown inFig. 2. After the obstruction is passed the parts are readily restoredto position, as will be readily understood.

Any desired resistance may be provided for by the formation of theengaging parts, and the tension which is applied thereto by means of thebolt and its nut. By this means a strong degree of friction may besecured between the spring-arms and the downwardly lextending bar.I/Vhen the nut is turned up to the point desired, it may be secured by alock-nut, as shown. The engaging ears may have any required degree ofabruptness, and consequently arranged. to resist any desired degree offorce before being forced apart.

Having thus fully described my said invention, what I claim as new, anddesire to secure by Letters Patent, is

l. The combination, in a plow or cultivator, of a suitable bar, and aplow-point-carrying member pivotally mounted thereon with spring armsextending up alongside said bar and having latching ears extending tobehind and engaging said bar when the plow is in normal operativeposition but adapted to yield and permit the plow-point to swingbackwardly when the latter strikes an obstruction, and also having astop which prevents said arms from swinging in the opposite direction tothe plowing pressure, substantially as shown and described. 2. Thecombination, in a plow or cultivator, of a suitable bar, and aplo\\f'point-carry ing member pivotally mounted thereon with spring armsextending up alongside said bar and having latching ears extending tobehind and engaging said bar when the plow is in normal operativeposition but adapted to yield and permit the plow-point to swing lOO IlO

baokwardly when the llatter strikes an obthis 3rd day of August, A. D.one thousand struotorl, the pvot (lun which sal1 alims are nine hundredand six. mounte bein a bo t-whereby t e :rcton between the spng arms andthe downwardly GEORGE S' MAYN' [L' S'] extending bar may be adjusted.Witnesses:

In witness whereof, I, have hereunto set CHESTER BRADFORD, my hand andseal at Indianapolis, Indiana, THOMAS W. MGMEANS.

